Carbon and Nitrogen Isotopes from Top Predator Amino Acids Reveal Rapidly Shifting Ocean Biochemistry in the Outer California Current

@inproceedings{RuizCooley2014CarbonAN,
  title={Carbon and Nitrogen Isotopes from Top Predator Amino Acids Reveal Rapidly Shifting Ocean Biochemistry in the Outer California Current},
  author={Rocio I Ruiz-Cooley and Paul L Koch and Paul C. Fiedler and Matthew McCarthy and Wei-Chun Chin},
  booktitle={PloS one},
  year={2014}
}
Climatic variation alters biochemical and ecological processes, but it is difficult both to quantify the magnitude of such changes, and to differentiate long-term shifts from inter-annual variability. Here, we simultaneously quantify decade-scale isotopic variability at the lowest and highest trophic positions in the offshore California Current System (CCS) by measuring δ15N and δ13C values of amino acids in a top predator, the sperm whale (Physeter macrocephalus). Using a time series of skin… CONTINUE READING

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